/* roulang page: index */
:root{
  --bg-900:#0C0F0D;
  --bg-800:#121714;
  --surface:#171E1A;
  --surface-2:#1E2621;
  --line:rgba(201,247,58,.14);
  --line-soft:rgba(255,255,255,.07);
  --brand:#C9F73A;
  --brand-deep:#A6D22B;
  --accent:#FF6A3D;
  --electric:#35E0C8;
  --text-1:#F2F6EF;
  --text-2:#A9B4A8;
  --text-3:#6F7B6F;
  --danger:#F87171;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.5);
  --ease:180ms cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.28;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease);}
img{max-width:100%;display:block;border-style:none;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(201,247,58,.3);color:#0C0F0D;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-800);}
::-webkit-scrollbar-thumb{background:#2A342C;border-radius:999px;border:2px solid var(--bg-800);}
::-webkit-scrollbar-thumb:hover{background:#3A473C;}
.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}
.no-scrollbar::-webkit-scrollbar{display:none;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:768px){.container-x{padding-left:32px;padding-right:32px;}}
@media(min-width:1280px){.container-x{max-width:1280px;padding-left:40px;padding-right:40px;}}

/* ---------- header ---------- */
.brand-row{
  position:sticky;top:0;z-index:60;
  background:var(--bg-900);
  border-bottom:1px solid var(--line);
}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
.logo{display:flex;align-items:center;gap:12px;min-width:0;}
.logo-mark{
  width:28px;height:28px;border-radius:8px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;flex:none;
  box-shadow:0 6px 18px rgba(201,247,58,.22);
}
.logo-mark svg{width:16px;height:16px;display:block;}
.logo-name{display:block;font-size:18px;font-weight:800;letter-spacing:-.01em;line-height:1.1;white-space:nowrap;}
.logo-sub{display:block;font-size:11px;color:var(--text-3);line-height:1.5;letter-spacing:.02em;white-space:nowrap;}
.brand-actions{display:flex;align-items:center;gap:14px;}
.search-box{position:relative;display:none;}
.search-box input{
  width:220px;height:38px;border-radius:var(--radius-btn);
  background:var(--bg-800);border:1px solid var(--line);
  padding:0 14px 0 36px;font-size:14px;color:var(--text-1);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(201,247,58,.18);}
.search-box svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text-3);}
.text-link{color:var(--text-2);font-size:14px;}
.text-link:hover{color:var(--brand);}
.menu-toggle{
  display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);color:var(--text-1);
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand);}
.menu-toggle svg{width:20px;height:20px;}

.channel-row{background:var(--bg-800);border-bottom:1px solid var(--line);}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:48px;}
.channel-list{display:flex;align-items:center;gap:4px;overflow-x:auto;height:100%;}
.channel-link{
  display:inline-flex;align-items:center;height:48px;padding:0 14px;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  border-bottom:2px solid transparent;
}
.channel-link:hover{color:var(--brand);background:rgba(201,247,58,.06);}
.channel-link.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:600;}
.status-badge{
  display:none;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  font-size:12px;color:var(--brand);border:1px solid var(--line);white-space:nowrap;
}
.status-badge .pulse{width:6px;height:6px;border-radius:999px;background:var(--brand);display:inline-block;}
@media(min-width:768px){.search-box{display:block;}.status-badge{display:inline-flex;}}
@media(min-width:1024px){.menu-toggle{display:none;}}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity 240ms ease;z-index:80;}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:90;
  background:var(--bg-800);border-left:1px solid var(--line);
  padding:24px 20px;overflow-y:auto;
  transform:translateX(102%);transition:transform 240ms cubic-bezier(.2,.8,.2,1);
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.drawer-link{
  display:flex;align-items:center;justify-content:center;min-height:44px;
  border-radius:var(--radius-btn);border:1px solid var(--line);
  background:var(--surface);font-size:14px;color:var(--text-2);
}
.drawer-link:hover,.drawer-link.active{border-color:var(--brand);color:var(--brand);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:all var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#0C0F0D;box-shadow:0 8px 24px rgba(201,247,58,.18);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 30px rgba(201,247,58,.28);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-outline{background:transparent;border-color:var(--line);color:var(--text-1);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0) scale(.99);}
.btn-sm{min-height:38px;padding:8px 18px;font-size:14px;border-radius:9px;}
.text-link-arrow{color:var(--brand);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.text-link-arrow svg{width:16px;height:16px;transition:transform var(--ease);}
.text-link-arrow:hover svg{transform:translateX(3px);}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg-900);min-height:420px;display:flex;align-items:center;padding:56px 0;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.26;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,15,13,.68) 0%,rgba(12,15,13,.9) 62%,var(--bg-900) 100%);
}
.hero-dots{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:radial-gradient(rgba(201,247,58,.16) 1px,transparent 1px);
  background-size:24px 24px;opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-slash{
  position:absolute;top:0;right:0;width:420px;height:230px;z-index:1;pointer-events:none;
  background:rgba(53,224,200,.08);
  clip-path:polygon(38% 0,100% 0,100% 100%,0 100%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
@media(min-width:1024px){.hero{min-height:560px;padding:72px 0;}.hero-grid{grid-template-columns:7fr 5fr;gap:56px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);font-size:12px;color:var(--brand);margin-bottom:20px;letter-spacing:.04em;
}
.eyebrow .pulse{width:6px;height:6px;border-radius:999px;background:var(--electric);display:inline-block;}
.hero h1{font-size:28px;font-weight:800;line-height:1.22;letter-spacing:-.01em;}
@media(min-width:1024px){.hero h1{font-size:44px;line-height:1.15;letter-spacing:-.02em;}}
.hero-sub{font-size:16px;color:var(--text-2);margin-top:16px;max-width:520px;}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.hero-badges li{
  padding:4px 12px;border-radius:999px;border:1px solid var(--line);
  font-size:12px;color:var(--text-2);
}
.hero-visual{position:relative;}
.hero-visual-frame{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-2);aspect-ratio:4/3;background:var(--surface-2);
}
.hero-visual-frame img{width:100%;height:100%;object-fit:cover;}
.hero-float-card{
  position:absolute;left:16px;bottom:16px;right:16px;
  display:flex;align-items:center;gap:10px;
  background:rgba(12,15,13,.88);border:1px solid var(--line);
  border-radius:var(--radius-btn);padding:12px 16px;font-size:13px;color:var(--text-2);
}
.hero-float-card strong{margin-left:auto;color:var(--brand);font-size:13px;font-variant-numeric:tabular-nums;}
.dot-live{width:7px;height:7px;border-radius:999px;background:var(--brand);display:inline-block;flex:none;}

/* ---------- generic section ---------- */
.section{padding:56px 0;position:relative;}
@media(min-width:1024px){.section{padding:88px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-title{position:relative;padding-left:16px;font-size:22px;font-weight:700;}
@media(min-width:1024px){.section-title{font-size:32px;}}
.section-title::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--brand);}
.section-desc{font-size:14px;color:var(--text-2);margin-top:10px;max-width:560px;}
.section-alt{background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ---------- quick cards ---------- */
.quick-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.quick-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.quick-grid{grid-template-columns:repeat(4,1fr);}}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  display:flex;flex-direction:column;height:100%;
}
.card:hover{transform:translateY(-3px);border-color:rgba(201,247,58,.45);box-shadow:var(--shadow-1);}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--surface-2);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
  border:1px solid var(--line);color:var(--brand);
}
.card-icon svg{width:22px;height:22px;}
.card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.card p{font-size:14px;color:var(--text-2);line-height:1.75;}
.card-meta{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:12px;color:var(--text-3);display:flex;align-items:center;justify-content:space-between;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:20px;position:relative;}
@media(min-width:1024px){.steps{grid-template-columns:repeat(3,1fr);gap:24px;}}
.step-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;transition:transform var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-3px);border-color:rgba(201,247,58,.45);}
.step-card.is-first{border-top:2px solid var(--brand);background:linear-gradient(180deg,rgba(201,247,58,.05),transparent 55%),var(--surface);}
.step-num{
  font-size:40px;font-weight:800;line-height:1;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.step-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.step-head .step-num{font-size:32px;}
.step-icon{color:var(--electric);display:flex;}
.step-icon svg{width:24px;height:24px;}
.step-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--text-2);}
@media(min-width:1024px){
  .step-card:not(:last-child)::after{
    content:"";position:absolute;top:50%;right:-24px;width:24px;height:1px;
    border-top:1px dashed var(--line);
  }
}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:1024px){.proof-grid{grid-template-columns:4fr 8fr;gap:40px;}}
.stat-stack{display:flex;flex-direction:column;gap:1px;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--line);}
.stat-item{background:var(--surface);padding:24px;flex:1;}
.stat-value{font-size:40px;font-weight:800;line-height:1.05;color:var(--text-1);font-variant-numeric:tabular-nums;letter-spacing:-.03em;}
.stat-value em{font-style:normal;font-size:18px;color:var(--brand);margin-left:6px;font-weight:600;}
.stat-label{font-size:13px;color:var(--text-3);margin-top:8px;}
.voice-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.voice-grid{grid-template-columns:repeat(2,1fr);}}
.voice-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;display:flex;flex-direction:column;gap:14px;
  transition:transform var(--ease),border-color var(--ease);
}
.voice-card:hover{transform:translateY(-3px);border-color:rgba(201,247,58,.45);}
.voice-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;border-radius:999px;flex:none;
  background:var(--surface-2);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:var(--brand);
}
.voice-name{font-size:14px;font-weight:600;}
.voice-role{font-size:12px;color:var(--text-3);}
.voice-card blockquote{margin:0;font-size:15px;color:var(--text-2);line-height:1.8;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  font-size:12px;line-height:1.6;border:1px solid var(--line);color:var(--text-2);
}
.badge-electric{color:var(--electric);border-color:rgba(53,224,200,.35);}
.badge-brand{color:var(--brand);border-color:rgba(201,247,58,.35);}
.voice-cover{border-radius:var(--radius-img);overflow:hidden;aspect-ratio:16/9;background:var(--surface-2);}
.voice-cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- news / cms ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(4,1fr);}}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(201,247,58,.45);box-shadow:var(--shadow-1);}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);position:relative;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.8,.2,1);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{
  font-size:16px;font-weight:600;line-height:1.55;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--brand);}
.news-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.news-time{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-arrow{color:var(--text-3);display:flex;transition:color var(--ease),transform var(--ease);}
.news-arrow svg{width:16px;height:16px;}
.news-card:hover .news-arrow{color:var(--brand);transform:translateX(3px);}
.news-badge-slot{margin:0;}
.empty-state{
  min-height:240px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--surface);display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;padding:32px;text-align:center;
}
.empty-state svg{width:36px;height:36px;color:var(--text-3);}
.empty-title{font-size:15px;color:var(--text-2);}
.empty-desc{font-size:13px;color:var(--text-3);}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:1024px){.faq-layout{grid-template-columns:4fr 8fr;gap:56px;}}
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:14px 4px;font-size:17px;font-weight:600;color:var(--text-1);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"+";flex:none;width:28px;height:28px;border-radius:999px;
  border:1px solid var(--line);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
  transition:transform 200ms ease,background-color var(--ease);
}
.faq-item[open] summary::after{content:"−";background:rgba(201,247,58,.1);}
.faq-answer{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px;}

/* ---------- cta ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--bg-800);border-top:1px solid var(--line);padding:48px 0;}
@media(min-width:1024px){.cta-band{padding:72px 0;}}
.cta-slash{
  position:absolute;top:0;right:0;width:360px;height:100%;
  background:rgba(201,247,58,.05);
  clip-path:polygon(42% 0,100% 0,100% 100%,0 100%);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-direction:column;gap:20px;align-items:flex-start;text-align:left;}
@media(min-width:1024px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px;}}
.cta-inner h2{font-size:22px;font-weight:700;}
@media(min-width:1024px){.cta-inner h2{font-size:28px;}}
.cta-inner p{font-size:14px;color:var(--text-2);margin-top:10px;max-width:560px;}
.cta-note{font-size:12px;color:var(--text-3);margin-top:12px;}

/* ---------- form ---------- */
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;border-radius:var(--radius-btn);
  background:var(--bg-800);border:1px solid var(--line);
  padding:0 14px;font-size:14px;color:var(--text-1);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(201,247,58,.25);}
.form-hint{font-size:12px;color:var(--danger);min-height:18px;margin-top:6px;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-800);position:relative;padding-top:1px;}
.footer-gradient{height:4px;background:linear-gradient(90deg,var(--brand),var(--accent));}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-top:48px;padding-bottom:36px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:5fr 3fr 4fr;gap:40px;}}
.footer-brand .logo-name{font-size:18px;}
.footer-desc{font-size:13px;color:var(--text-2);margin-top:10px;max-width:320px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-tags li{padding:4px 10px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--text-2);}
.footer-col h3{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:20px;padding-bottom:28px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- back to top ---------- */
.back-top{
  position:fixed;right:20px;bottom:24px;width:56px;height:56px;border-radius:999px;
  background:var(--brand);color:#0C0F0D;display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 30px rgba(201,247,58,.28);z-index:70;
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity var(--ease),transform var(--ease),background-color var(--ease);
}
.back-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.back-top:hover{background:var(--brand-deep);}
.back-top svg{width:22px;height:22px;}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-900:#0C0F0D;
  --bg-800:#121714;
  --surface:#171E1A;
  --surface-2:#1E2621;
  --line:rgba(201,247,58,.14);
  --brand:#C9F73A;
  --brand-deep:#A6D22B;
  --accent:#FF6A3D;
  --electric:#35E0C8;
  --text-1:#F2F6EF;
  --text-2:#A9B4A8;
  --text-3:#6F7B6F;
  --danger:#F87171;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.5);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}
.no-scrollbar::-webkit-scrollbar{display:none}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:768px){.container-x{padding:0 32px}}
@media (min-width:1024px){.container-x{padding:0 40px;max-width:1280px}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:all 180ms var(--ease);white-space:nowrap;line-height:1;
}
.btn-primary{background:var(--brand);color:#0C0F0D;box-shadow:0 8px 24px rgba(201,247,58,.18)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 14px 32px rgba(201,247,58,.28)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.99)}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600}
.link-arrow i{transition:transform 180ms var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.5;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.02);
}
.badge-electric{color:var(--electric);border-color:rgba(53,224,200,.35);background:rgba(53,224,200,.07)}
.badge-brand{color:var(--brand);border-color:rgba(201,247,58,.35);background:rgba(201,247,58,.07)}
.badge-plain{border-color:transparent;color:var(--text-3)}

/* ============ 头部 ============ */
.site-header{position:sticky;top:0;z-index:50;background:var(--bg-900);border-bottom:1px solid var(--line)}
.brand-row{border-bottom:1px solid var(--line);background:var(--bg-900)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.brand-logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{position:relative;width:28px;height:28px;border-radius:8px;background:var(--brand);flex:none}
.logo-mark::after{content:"";position:absolute;right:-4px;bottom:-4px;width:12px;height:12px;border-radius:4px;background:var(--accent);border:2px solid var(--bg-900)}
.logo-text{display:flex;flex-direction:column;gap:2px;line-height:1.1}
.logo-name{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--text-1)}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.02em}
.brand-actions{display:flex;align-items:center;gap:14px}
.brand-search{display:none;align-items:center;gap:8px;height:40px;padding:0 14px;background:var(--bg-800);border:1px solid var(--line);border-radius:10px;color:var(--text-3);transition:border-color 180ms var(--ease)}
.brand-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(201,247,58,.18)}
.brand-search input{width:190px;background:transparent;border:0;outline:0;font-size:14px;color:var(--text-1)}
.brand-search input::placeholder{color:var(--text-3)}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;color:var(--text-1);transition:all 180ms var(--ease)}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}
@media (min-width:1024px){
  .brand-search{display:flex}
  .menu-toggle{display:none}
}
@media (max-width:1023px){
  .brand-actions .btn-primary{display:none}
  .brand-actions .link-arrow{display:none}
}

/* ============ 频道行 ============ */
.channel-row{background:var(--bg-800);border-bottom:1px solid var(--line)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:48px}
.channel-list{display:flex;align-items:center;gap:2px;overflow-x:auto;min-width:0}
.channel-link{position:relative;display:block;padding:0 14px;height:48px;line-height:48px;font-size:14px;color:var(--text-2);white-space:nowrap;transition:color 180ms var(--ease),background 180ms var(--ease)}
.channel-link:hover{color:var(--brand);background:rgba(201,247,58,.06)}
.channel-link.active{color:var(--brand)}
.channel-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;border-radius:2px;background:var(--brand)}
.status-badge{display:none;align-items:center;gap:7px;padding:4px 10px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--text-3);white-space:nowrap;flex:none}
@media (min-width:768px){.status-badge{display:inline-flex}}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 0 rgba(201,247,58,.5);animation:pulse 2s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(201,247,58,.45)}
  70%{box-shadow:0 0 0 8px rgba(201,247,58,0)}
  100%{box-shadow:0 0 0 0 rgba(201,247,58,0)}
}

/* ============ 移动抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;transition:opacity 200ms var(--ease),visibility 200ms var(--ease);z-index:70}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;right:0;background:var(--bg-800);border-bottom:1px solid var(--line);
  transform:translateY(-100%);transition:transform 240ms var(--ease);z-index:80;padding:20px 0 24px;
}
.drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;color:var(--text-2)}
.drawer-link:hover,.drawer-link.active{color:var(--brand);border-color:rgba(201,247,58,.45);background:rgba(201,247,58,.05)}
.drawer-foot{margin-top:18px}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(rgba(12,15,13,.86),rgba(12,15,13,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;top:-60px;right:-80px;width:320px;height:320px;
  background:linear-gradient(135deg,rgba(201,247,58,.12),rgba(255,106,61,.06));
  transform:rotate(45deg);pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:22px 0 0;flex-wrap:nowrap;overflow:hidden}
.breadcrumb a{color:var(--text-3);transition:color 180ms var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .current{color:var(--text-2);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{padding:18px 0 44px;max-width:820px}
.article-head h1{font-size:30px;line-height:1.25;font-weight:800;letter-spacing:-.02em;margin:16px 0 0;color:var(--text-1)}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:16px;font-size:13px;color:var(--text-3)}
.article-meta .dot{opacity:.6}
@media (min-width:768px){
  .article-head h1{font-size:38px}
}

/* ============ 布局 ============ */
.article-main{padding:56px 0 0}
.article-layout{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px}
}
.article-content{min-width:0}
.article-body{max-width:760px}

/* ============ 长文排版 ============ */
.article-body p{font-size:17px;line-height:1.9;color:rgba(242,246,239,.9);margin:0 0 20px;overflow-wrap:break-word}
.article-body h2{font-size:24px;line-height:1.4;font-weight:700;color:var(--text-1);margin:40px 0 14px;padding-left:12px;border-left:4px solid var(--brand)}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text-1);margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-1);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body ul li{position:relative;list-style:none;margin-bottom:10px;font-size:16px;line-height:1.85;color:rgba(242,246,239,.9)}
.article-body ul li::before{content:"";position:absolute;left:-16px;top:.7em;width:6px;height:6px;border-radius:1px;background:var(--accent)}
.article-body ol li{margin-bottom:10px;font-size:16px;line-height:1.85;color:rgba(242,246,239,.9);list-style:decimal}
.article-body blockquote{margin:24px 0;padding:16px 20px;border-left:3px solid var(--brand);background:rgba(201,247,58,.07);border-radius:0 12px 12px 0;color:var(--text-2)}
.article-body blockquote p{margin:0;font-size:16px;color:var(--text-2)}
.article-body img{border-radius:var(--radius-img);margin:24px 0;width:100%;height:auto}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th{background:var(--surface-2);color:var(--text-1);text-align:left;padding:12px 16px;border:1px solid var(--line);font-weight:600}
.article-body td{padding:12px 16px;border:1px solid var(--line);color:var(--text-2)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body strong{color:var(--text-1);font-weight:700}
@media (max-width:640px){
  .article-body p{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}

/* ============ 空态 ============ */
.empty-article{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:48px 32px;text-align:center;max-width:760px;
}
.empty-article i{font-size:32px;color:var(--electric);margin-bottom:16px;display:block}
.empty-article h2{font-size:22px;font-weight:700;margin-bottom:12px}
.empty-article p{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:24px}

/* ============ 文章收尾 ============ */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin:36px 0 20px}
.tag-pill{padding:6px 14px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--text-2);background:rgba(255,255,255,.02);transition:all 180ms var(--ease)}
.tag-pill:hover{color:var(--brand);border-color:rgba(201,247,58,.45)}
.article-share{display:flex;align-items:center;gap:12px;padding:20px 0 4px;border-top:1px solid var(--line)}
.article-share span.lbl{font-size:13px;color:var(--text-3);margin-right:4px}
.share-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  color:var(--text-2);transition:all 180ms var(--ease);
}
.share-btn:hover{color:var(--brand);border-color:rgba(201,247,58,.5);transform:translateY(-2px)}
.share-btn.done{color:var(--brand);border-color:var(--brand)}

.read-next{display:grid;grid-template-columns:1fr;gap:16px;margin:36px 0 28px}
@media (min-width:640px){.read-next{grid-template-columns:1fr 1fr}}
.next-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;transition:all 180ms var(--ease);
}
.next-card:hover{transform:translateY(-3px);border-color:rgba(201,247,58,.45);box-shadow:var(--shadow-1)}
.next-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:8px}
.next-title{display:block;font-size:15px;font-weight:600;line-height:1.6;color:var(--text-1);transition:color 180ms var(--ease);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.next-card:hover .next-title{color:var(--brand)}
.back-channel{margin-bottom:8px}

/* ============ 侧栏 ============ */
.article-side{min-width:0}
.side-sticky{position:sticky;top:88px}
@media (max-width:1023px){.side-sticky{position:static}}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;margin-bottom:24px}
.side-card h2{font-size:16px;font-weight:700;margin:0 0 16px;padding-left:10px;border-left:3px solid var(--electric);line-height:1.4}
.side-empty{display:flex;align-items:center;justify-content:center;min-height:120px;text-align:center;font-size:13px;color:var(--text-3);line-height:1.7}
.side-list li + li{border-top:1px dashed var(--line)}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 4px;font-size:14px;color:var(--text-2);transition:all 180ms var(--ease)}
.side-list a:hover{color:var(--brand);background:rgba(255,255,255,.03)}
.side-list i{font-size:12px;color:var(--text-3);transition:transform 180ms var(--ease)}
.side-list a:hover i{transform:translateX(3px);color:var(--brand)}
.side-cta img{border-radius:var(--radius-img);aspect-ratio:16/9;object-fit:cover;margin-bottom:16px;width:100%}
.side-cta p{font-size:14px;line-height:1.75;color:var(--text-2);margin-bottom:18px}

/* ============ CTA ============ */
.cta-band{position:relative;background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:80px;overflow:hidden}
.cta-band::after{content:"";position:absolute;top:-70px;right:-90px;width:300px;height:300px;background:linear-gradient(135deg,rgba(201,247,58,.14),rgba(255,106,61,.05));transform:rotate(45deg);pointer-events:none}
.cta-inner{position:relative;display:flex;flex-direction:column;gap:24px;padding:48px 0;z-index:1}
.cta-inner h2{font-size:24px;font-weight:700;line-height:1.35;margin-bottom:12px}
.cta-inner p{font-size:15px;line-height:1.8;color:var(--text-2);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.cta-note{margin-top:14px;font-size:12px;color:var(--text-3)}
@media (min-width:1024px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:64px 0}
  .cta-inner h2{font-size:28px}
}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--bg-800);margin-top:0}
.footer-gradient{height:4px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:56px 0 40px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr}}
.footer-brand .logo-name{display:block;font-size:18px;font-weight:800;color:var(--text-1)}
.footer-desc{font-size:13px;color:var(--text-2);margin-top:10px;line-height:1.7}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-tags li{padding:4px 10px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--text-2)}
.footer-col h3{font-size:14px;font-weight:700;color:var(--text-1);margin:0 0 16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:13px;color:var(--text-2);line-height:1.7;transition:color 180ms var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{display:flex;flex-direction:column;gap:8px;padding:20px 0 32px;border-top:1px solid var(--line)}
.footer-bottom p{font-size:12px;color:var(--text-3);line-height:1.7}
.footer-bottom a{color:var(--text-3);transition:color 180ms var(--ease)}
.footer-bottom a:hover{color:var(--brand)}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}
}

/* ============ 回到顶部 ============ */
.back-top{
  position:fixed;right:20px;bottom:24px;width:56px;height:56px;border-radius:50%;
  background:var(--brand);color:#0C0F0D;display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:all 200ms var(--ease);z-index:60;box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--brand-deep);transform:translateY(-3px)}
@media (max-width:640px){.back-top{right:14px;bottom:16px;width:48px;height:48px}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
    --bg-900:#0C0F0D;
    --bg-800:#121714;
    --surface:#171E1A;
    --surface-2:#1E2621;
    --line:rgba(201,247,58,.14);
    --line-strong:rgba(201,247,58,.45);
    --brand:#C9F73A;
    --brand-deep:#A6D22B;
    --accent:#FF6A3D;
    --electric:#35E0C8;
    --text-1:#F2F6EF;
    --text-2:#A9B4A8;
    --text-3:#6F7B6F;
    --danger:#F87171;
    --r-card:16px;
    --r-img:12px;
    --r-btn:10px;
    --shadow-1:0 10px 30px rgba(0,0,0,.35);
    --shadow-2:0 16px 40px rgba(0,0,0,.5);
    --ease:cubic-bezier(.2,.8,.2,1);
    --t:180ms cubic-bezier(.2,.8,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-900);
    color:var(--text-1);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body.no-scroll{overflow:hidden;}
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t);}
  button,input,textarea{font:inherit;color:inherit;}
  button{cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
  ::selection{background:rgba(201,247,58,.28);color:#0C0F0D;}
  .tnum{font-variant-numeric:tabular-nums;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){ .container-x{padding:0 32px;} }
  @media (min-width:1280px){ .container-x{max-width:1280px;padding:0 40px;} }

  /* ============ header ============ */
  .site-header{position:sticky;top:0;z-index:50;}
  .brand-row{height:64px;background:var(--bg-900);border-bottom:1px solid var(--line);}
  .brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px;}
  .brand{display:flex;align-items:center;gap:12px;min-height:44px;}
  .brand-mark{
    width:28px;height:28px;border-radius:8px;background:var(--brand);color:#0C0F0D;
    display:grid;place-items:center;font-size:15px;font-weight:800;flex-shrink:0;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .logo-name{font-size:18px;font-weight:800;letter-spacing:-.01em;}
  .logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.08em;}
  .brand-actions{display:flex;align-items:center;gap:12px;}
  .search-box{
    display:none;align-items:center;gap:8px;height:44px;padding:0 14px;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
    transition:border-color var(--t),box-shadow var(--t);
  }
  .search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(201,247,58,.18);}
  .search-box input{
    background:transparent;border:0;outline:0;width:170px;font-size:14px;color:var(--text-1);
  }
  .search-box input::placeholder{color:var(--text-3);}
  @media (min-width:1024px){ .search-box{display:flex;} }
  .text-link{
    display:none;font-size:14px;color:var(--brand);align-items:center;gap:4px;min-height:44px;
  }
  .text-link:hover{color:var(--brand-deep);}
  .text-link span{transition:transform var(--t);display:inline-block;}
  .text-link:hover span{transform:translateX(2px);}
  @media (min-width:768px){ .text-link{display:inline-flex;} }
  .menu-toggle{
    width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
    background:transparent;display:grid;place-items:center;gap:4px;
  }
  .menu-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;}
  @media (min-width:1024px){ .menu-toggle{display:none;} }

  .channel-row{background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .channel-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;}
  .channel-list{display:flex;align-items:center;gap:4px;overflow-x:auto;height:48px;}
  .channel-link{
    display:inline-flex;align-items:center;height:48px;padding:0 16px;font-size:15px;
    color:var(--text-2);position:relative;white-space:nowrap;
  }
  .channel-link:hover{color:var(--brand);background:rgba(201,247,58,.06);}
  .channel-link.active{color:var(--brand);font-weight:700;}
  .channel-link.active::after{
    content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;border-radius:2px;background:var(--brand);
  }
  .status-badge{
    display:none;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
    border:1px solid var(--line);font-size:12px;color:var(--text-2);white-space:nowrap;
  }
  @media (min-width:768px){ .status-badge{display:inline-flex;} }
  .pulse{width:7px;height:7px;border-radius:999px;background:var(--brand);animation:pulse 1.8s infinite;}
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(201,247,58,.45);}
    70%{box-shadow:0 0 0 8px rgba(201,247,58,0);}
    100%{box-shadow:0 0 0 0 rgba(201,247,58,0);}
  }
  .no-scrollbar::-webkit-scrollbar{display:none;}
  .no-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}

  /* ============ buttons ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:700;
    border:1px solid transparent;white-space:nowrap;
    transition:transform var(--t),background var(--t),box-shadow var(--t),border-color var(--t),color var(--t);
  }
  .btn-primary{background:var(--brand);color:#0C0F0D;box-shadow:var(--shadow-1),0 8px 24px rgba(201,247,58,.18);}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2),0 12px 30px rgba(201,247,58,.26);}
  .btn-primary:active{transform:translateY(0) scale(.99);}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1);}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
  .btn-sm{padding:10px 18px;font-size:14px;min-height:40px;}
  .btn-block{width:100%;}

  /* ============ drawer ============ */
  .drawer-overlay{
    position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:70;opacity:0;pointer-events:none;
    transition:opacity var(--t);
  }
  .drawer-overlay.show{opacity:1;pointer-events:auto;}
  .mobile-drawer{
    position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);background:var(--bg-800);
    border-left:1px solid var(--line);z-index:80;padding:20px;transform:translateX(100%);
    transition:transform 220ms var(--ease);display:flex;flex-direction:column;gap:20px;
  }
  .mobile-drawer.show{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;}
  .drawer-close{
    width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);
    background:transparent;font-size:20px;line-height:1;color:var(--text-2);
  }
  .drawer-close:hover{color:var(--brand);border-color:var(--brand);}
  .drawer-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
  .drawer-list a{
    display:flex;align-items:center;justify-content:center;min-height:48px;border-radius:var(--r-btn);
    border:1px solid var(--line);background:var(--surface);font-size:15px;color:var(--text-2);
  }
  .drawer-list a:hover{color:var(--brand);border-color:var(--brand);}
  .drawer-list a.active{color:var(--brand);border-color:var(--line-strong);font-weight:700;}

  /* ============ hero-lite ============ */
  .hero-lite{position:relative;overflow:hidden;background:var(--bg-900);border-bottom:1px solid var(--line);}
  .hero-lite-bg{
    position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;opacity:.38;
  }
  .hero-lite-mask{
    position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(12,15,13,.94) 0%,rgba(12,15,13,.78) 55%,rgba(12,15,13,.9) 100%);
  }
  .hero-lite-dots{
    position:absolute;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:24px 24px;
  }
  .cut-block{
    position:absolute;top:-80px;right:-40px;width:340px;height:340px;
    background:rgba(201,247,58,.06);clip-path:polygon(100% 0,100% 100%,0 0);pointer-events:none;
  }
  .hero-lite-inner{position:relative;z-index:2;padding:36px 0 48px;min-height:280px;display:flex;flex-direction:column;justify-content:center;gap:16px;}
  @media (min-width:1024px){ .hero-lite-inner{padding:56px 0 64px;min-height:320px;} }
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:var(--text-3);}
  .breadcrumb .current{color:var(--text-2);}
  .hero-lite h1{
    font-size:26px;line-height:1.25;font-weight:800;letter-spacing:-.01em;max-width:900px;
  }
  @media (min-width:768px){ .hero-lite h1{font-size:34px;} }
  @media (min-width:1024px){ .hero-lite h1{font-size:40px;line-height:1.15;letter-spacing:-.02em;} }
  .hero-lite h1 em{font-style:normal;color:var(--brand);}
  .hero-sub{font-size:15px;color:var(--text-2);max-width:640px;}
  @media (min-width:768px){ .hero-sub{font-size:16px;} }
  .badge-row{display:flex;flex-wrap:wrap;gap:10px;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
    font-size:12px;line-height:1.6;border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.02);
  }
  .badge-brand{border-color:var(--line-strong);color:var(--brand);}
  .badge-electric{border-color:rgba(53,224,200,.4);color:var(--electric);}
  .badge-plain{border-color:transparent;color:var(--text-3);padding-left:0;}

  /* ============ layout ============ */
  .page-main{padding:56px 0 80px;}
  @media (min-width:1024px){ .page-main{padding:80px 0 96px;} }
  .main-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
  @media (min-width:1024px){ .main-grid{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;} }
  .side-col{display:flex;flex-direction:column;gap:24px;}
  @media (min-width:1024px){ .side-col{position:sticky;top:132px;align-self:start;} }

  .block{margin-bottom:56px;}
  .block:last-child{margin-bottom:0;}
  @media (min-width:1024px){ .block{margin-bottom:72px;} }
  .block-head{margin-bottom:24px;}
  .section-title{
    position:relative;padding-left:14px;font-size:22px;line-height:1.3;font-weight:700;letter-spacing:-.01em;
  }
  @media (min-width:768px){ .section-title{font-size:26px;} }
  .section-title::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);
  }
  .section-note{margin-top:10px;font-size:14px;color:var(--text-2);max-width:680px;}

  .prose p{font-size:16px;line-height:1.9;color:rgba(242,246,239,.9);margin-bottom:20px;}
  @media (min-width:768px){ .prose p{font-size:17px;} }
  .prose p:last-child{margin-bottom:0;}
  .prose strong{color:var(--brand);font-weight:700;}
  .prose ul{margin:0 0 20px;}
  .prose ul li{
    position:relative;padding-left:18px;margin-bottom:10px;font-size:16px;line-height:1.85;
    color:rgba(242,246,239,.88);
  }
  .prose ul li::before{
    content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:1px;background:var(--accent);
  }
  .prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}

  /* 要点卡（双列，不等高允许） */
  .point-grid{display:grid;grid-template-columns:1fr;gap:16px;margin:24px 0 8px;}
  @media (min-width:640px){ .point-grid{grid-template-columns:1fr 1fr;} }
  .point-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
    transition:transform var(--t),border-color var(--t),box-shadow var(--t);
  }
  .point-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-1);}
  .point-card .head{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
  .point-card h3{font-size:17px;font-weight:600;line-height:1.4;}
  .point-card p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0;}
  .icon-sq{
    width:28px;height:28px;border-radius:8px;display:grid;place-items:center;flex-shrink:0;
    border:1px solid rgba(53,224,200,.35);color:var(--electric);
  }

  /* 步骤序列 */
  .steps{margin-top:8px;}
  .step{position:relative;padding:0 0 28px 52px;}
  .step:last-child{padding-bottom:0;}
  .step::before{
    content:"";position:absolute;left:11px;top:26px;bottom:0;width:1px;background:var(--line);
  }
  .step:last-child::before{display:none;}
  .step-dot{
    position:absolute;left:0;top:2px;width:24px;height:24px;border-radius:999px;
    background:var(--surface);border:1px solid var(--line-strong);display:grid;place-items:center;
    font-size:11px;font-weight:800;color:var(--brand);
  }
  .step h3{font-size:18px;font-weight:600;line-height:1.45;margin-bottom:6px;}
  .step p{font-size:15px;line-height:1.8;color:var(--text-2);margin:0;}
  .step .meta{margin-top:8px;font-size:12px;color:var(--text-3);}

  /* 图文块 */
  .figure-block{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;margin-top:24px;
  }
  .figure-block .img-wrap{
    overflow:hidden;border-radius:var(--r-img);border:1px solid var(--line);aspect-ratio:16/9;background:var(--surface-2);
  }
  .figure-block img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
  .figure-block:hover img{transform:scale(1.03);}
  .figure-block figcaption{margin-top:12px;font-size:12px;line-height:1.7;color:var(--text-3);text-align:center;}

  .mini-list{margin:20px 0 0;display:grid;gap:10px;}
  .mini-list li{
    display:flex;gap:10px;align-items:flex-start;padding:12px 16px;border:1px dashed var(--line);
    border-radius:var(--r-img);font-size:14px;line-height:1.7;color:var(--text-2);
  }
  .mini-list li b{color:var(--text-1);font-weight:600;}

  /* FAQ */
  .faq-list{margin-top:8px;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 0;min-height:64px;font-size:16px;font-weight:600;line-height:1.5;color:var(--text-1);
    transition:color var(--t);
  }
  @media (min-width:768px){ .faq-item summary{font-size:17px;} }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand);}
  .faq-item summary::after{
    content:"+";flex-shrink:0;font-size:22px;font-weight:600;line-height:1;color:var(--brand);
    transition:transform 200ms var(--ease);
  }
  .faq-item[open] summary::after{transform:rotate(45deg);}
  .faq-body{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:680px;}

  /* 侧栏 */
  .side-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
  }
  .side-title{
    display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
    color:var(--electric);margin-bottom:14px;
  }
  .side-title::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--electric);}
  .toc-list li{border-bottom:1px dashed var(--line);}
  .toc-list li:last-child{border-bottom:0;}
  .toc-list a{display:block;padding:10px 0;font-size:14px;color:var(--text-2);}
  .toc-list a:hover{color:var(--brand);}
  .side-links li + li{margin-top:10px;}
  .side-links a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;
    padding:10px 14px;border:1px solid var(--line);border-radius:var(--r-img);font-size:14px;color:var(--text-2);
  }
  .side-links a:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(201,247,58,.04);}
  .side-links a span{color:var(--brand);}

  .form-field{margin-bottom:14px;}
  .form-field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
  .form-field input,.form-field textarea{
    width:100%;background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-btn);
    padding:12px 14px;font-size:14px;color:var(--text-1);outline:0;
    transition:border-color var(--t),box-shadow var(--t);
  }
  .form-field input{height:48px;}
  .form-field textarea{min-height:88px;resize:vertical;line-height:1.7;}
  .form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-3);}
  .form-field input:focus,.form-field textarea:focus{
    border-color:var(--brand);box-shadow:0 0 0 3px rgba(201,247,58,.25);
  }
  .form-hint{font-size:12px;color:var(--text-3);margin-top:10px;line-height:1.7;}

  /* CTA */
  .cta-band{
    position:relative;overflow:hidden;background:var(--bg-800);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:52px 0;
  }
  @media (min-width:1024px){ .cta-band{padding:72px 0;} }
  .cta-band .cut-block{top:-120px;right:-60px;background:rgba(201,247,58,.05);width:420px;height:420px;}
  .cta-inner{
    position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:18px;text-align:center;
  }
  @media (min-width:1024px){
    .cta-inner{flex-direction:row;justify-content:space-between;align-items:center;text-align:left;gap:40px;}
  }
  .cta-inner h2{font-size:22px;font-weight:700;line-height:1.35;}
  @media (min-width:768px){ .cta-inner h2{font-size:26px;} }
  .cta-inner p{margin-top:10px;font-size:14px;color:var(--text-2);max-width:520px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:center;}
  .cta-note{margin-top:12px;font-size:12px;color:var(--text-3);}

  /* footer */
  .site-footer{position:relative;background:var(--bg-800);padding-top:4px;}
  .footer-gradient{height:4px;background:linear-gradient(90deg,var(--brand),var(--accent));}
  .footer-grid{
    display:grid;grid-template-columns:1fr;gap:32px;padding-top:48px;padding-bottom:40px;
  }
  @media (min-width:640px){ .footer-grid{grid-template-columns:1fr 1fr;} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-top:56px;} }
  .footer-brand .logo-name{font-size:18px;font-weight:800;}
  .footer-desc{margin-top:10px;font-size:14px;color:var(--text-2);max-width:320px;}
  .footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
  .footer-tags li{
    padding:4px 10px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--text-2);
  }
  .footer-col h3{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;}
  .footer-col li{margin-bottom:10px;font-size:14px;color:var(--text-2);}
  .footer-col li:last-child{margin-bottom:0;}
  .footer-col a:hover{color:var(--brand);}
  .footer-bottom{
    display:flex;flex-direction:column;gap:10px;padding-top:20px;padding-bottom:28px;
    border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
  }
  @media (min-width:768px){ .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;} }
  .footer-bottom a{color:var(--text-3);}
  .footer-bottom a:hover{color:var(--brand);}

  /* back to top */
  .to-top{
    position:fixed;right:20px;bottom:20px;width:56px;height:56px;border-radius:999px;
    background:var(--brand);color:#0C0F0D;border:0;display:grid;place-items:center;z-index:60;
    opacity:0;pointer-events:none;transform:translateY(10px);
    transition:opacity var(--t),transform var(--t),background var(--t),box-shadow var(--t);
    box-shadow:0 12px 30px rgba(0,0,0,.45);
  }
  .to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
  .to-top:hover{background:var(--brand-deep);}

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category2 */
:root{
    --bg-900:#0C0F0D;
    --bg-800:#121714;
    --surface:#171E1A;
    --surface-2:#1E2621;
    --line:rgba(201,247,58,0.14);
    --brand:#C9F73A;
    --brand-deep:#A6D22B;
    --accent:#FF6A3D;
    --electric:#35E0C8;
    --text-1:#F2F6EF;
    --text-2:#A9B4A8;
    --text-3:#6F7B6F;
    --danger:#F87171;
    --radius-card:16px;
    --radius-btn:10px;
    --ease:180ms cubic-bezier(.2,.8,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-900);
    color:var(--text-1);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,figure,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input{font:inherit;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  ::selection{background:rgba(201,247,58,.28);color:#0C0F0D;}

  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:var(--bg-800);}
  ::-webkit-scrollbar-thumb{background:#2A342C;border-radius:999px;border:2px solid var(--bg-800);}
  ::-webkit-scrollbar-thumb:hover{background:#3A463B;}
  .no-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
  .no-scrollbar::-webkit-scrollbar{display:none;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container-x{padding:0 32px;}}
  @media (min-width:1280px){.container-x{padding:0 40px;max-width:1280px;}}

  /* ===== Header ===== */
  .site-header{position:sticky;top:0;z-index:60;background:var(--bg-900);}
  .brand-row{border-bottom:1px solid var(--line);background:var(--bg-900);}
  .brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;}
  .brand{display:flex;align-items:center;gap:10px;}
  .brand-mark{
    width:28px;height:28px;border-radius:8px;background:var(--brand);color:#0C0F0D;
    font-size:15px;font-weight:800;display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  }
  .logo-name{font-size:18px;font-weight:800;letter-spacing:-.01em;line-height:1.2;display:block;}
  .brand-sub{display:block;font-size:11px;line-height:1.5;color:var(--text-3);}
  .brand-actions{display:flex;align-items:center;gap:14px;}
  .search-box{
    display:flex;align-items:center;gap:8px;height:40px;width:230px;padding:0 12px;
    background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-btn);
    transition:border-color var(--ease),box-shadow var(--ease);
  }
  .search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(201,247,58,.18);}
  .search-box svg{flex:0 0 auto;color:var(--text-3);}
  .search-box input{width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--text-1);}
  .search-box input::placeholder{color:var(--text-3);}
  @media (max-width:1023px){.search-box{display:none;}}

  .menu-toggle{
    display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
    align-items:center;justify-content:center;color:var(--text-1);
  }
  .menu-toggle:hover{border-color:var(--brand);color:var(--brand);}
  @media (max-width:1023px){.menu-toggle{display:inline-flex;}}
  @media (max-width:1023px){.brand-actions .btn-primary,.brand-actions .link-arrow{display:none;}}

  .channel-row{background:var(--bg-800);border-bottom:1px solid var(--line);}
  .channel-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:48px;}
  .channel-list{display:flex;align-items:center;gap:4px;overflow-x:auto;white-space:nowrap;}
  .channel-link{
    display:inline-flex;align-items:center;height:48px;padding:0 16px;
    font-size:14.5px;color:var(--text-2);border-bottom:2px solid transparent;
  }
  .channel-link:hover{background:rgba(201,247,58,.06);color:var(--brand);}
  .channel-link.active{color:var(--brand);border-bottom-color:var(--brand);}
  .status-badge{
    display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
    padding:4px 12px;border:1px solid var(--line);border-radius:999px;font-size:12px;color:var(--text-2);
  }
  .pulse{width:7px;height:7px;border-radius:999px;background:var(--brand);box-shadow:0 0 0 3px rgba(201,247,58,.16);}
  @media (max-width:767px){.status-badge{display:none;}}

  /* ===== Drawer ===== */
  .drawer{position:fixed;inset:0;z-index:90;display:none;}
  .drawer.open{display:block;}
  .drawer-mask{position:absolute;inset:0;background:rgba(0,0,0,.6);}
  .drawer-panel{
    position:absolute;top:0;right:0;width:min(88vw,360px);height:100%;
    background:var(--bg-800);border-left:1px solid var(--line);padding:20px;overflow-y:auto;
  }
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
  .drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);display:flex;align-items:center;justify-content:center;}
  .drawer-close:hover{border-color:var(--brand);color:var(--brand);}
  .drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
  .drawer-link{
    display:flex;align-items:center;justify-content:center;min-height:48px;padding:0 12px;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-btn);
    font-size:14px;color:var(--text-2);
  }
  .drawer-link:hover{color:var(--brand);border-color:rgba(201,247,58,.45);}
  .drawer-link.active{color:var(--brand);border-color:rgba(201,247,58,.45);background:rgba(201,247,58,.06);}
  .drawer-cta{margin-top:16px;}

  /* ===== Buttons ===== */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:12px 24px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:700;letter-spacing:0;white-space:nowrap;
    transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  }
  .btn-primary{background:var(--brand);color:#0C0F0D;box-shadow:0 8px 24px rgba(201,247,58,.18);}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 30px rgba(201,247,58,.28);}
  .btn-primary:active{transform:translateY(0) scale(.99);}
  .btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text-1);}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
  .btn-sm{min-height:38px;padding:8px 16px;font-size:14px;}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;}
  .link-arrow::after{content:"→";transition:transform var(--ease);}
  .link-arrow:hover::after{transform:translateX(2px);}

  /* ===== Badges ===== */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 10px;border-radius:999px;border:1px solid var(--line);
    font-size:12px;line-height:1.6;color:var(--text-2);
  }
  .badge-electric{border-color:rgba(53,224,200,.4);color:var(--electric);}
  .badge-brand{border-color:rgba(201,247,58,.4);color:var(--brand);}

  .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:var(--text-3);}
  .breadcrumb .current{color:var(--text-2);}

  /* ===== Hero-lite ===== */
  .hero-lite{
    position:relative;overflow:hidden;
    background-color:var(--bg-900);
    background-image:linear-gradient(180deg,rgba(12,15,13,.86),rgba(12,15,13,.97)),url("/assets/images/backpic/back-2.png");
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--line);
  }
  .hero-lite::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(242,246,239,.05) 1px,transparent 1px);
    background-size:24px 24px;opacity:.9;pointer-events:none;
  }
  .hero-lite::after{
    content:"";position:absolute;top:-90px;right:-90px;width:300px;height:300px;
    background:rgba(201,247,58,.06);transform:rotate(45deg);pointer-events:none;
  }
  .hero-lite-grid{
    position:relative;z-index:2;
    display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;
    min-height:300px;padding:56px 0;
  }
  .hero-lite-copy .badge{margin:16px 0 16px;}
  .hero-lite h1{
    font-size:34px;line-height:1.22;font-weight:800;letter-spacing:-.02em;margin-bottom:14px;
  }
  .hero-lite h1 .hl{color:var(--brand);}
  .hero-sub{font-size:16px;color:var(--text-2);max-width:34ch;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .hero-lite-media{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:0 10px 30px rgba(0,0,0,.35);}
  .hero-lite-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.8,.2,1);}
  .hero-lite-media:hover img{transform:scale(1.03);}
  @media (max-width:1023px){
    .hero-lite-grid{grid-template-columns:1fr;gap:32px;padding:40px 0;min-height:auto;}
    .hero-lite h1{font-size:28px;}
    .hero-lite-media{max-width:560px;}
  }

  /* ===== Section shell ===== */
  .section{padding:88px 0;}
  .section-alt{background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  @media (max-width:767px){.section{padding:56px 0;}}
  .section-head{margin-bottom:40px;max-width:720px;}
  .section-title{
    position:relative;padding-left:16px;
    font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.01em;
  }
  .section-title::before{
    content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand);
  }
  .section-desc{margin-top:12px;font-size:15px;color:var(--text-2);}
  @media (max-width:767px){.section-title{font-size:22px;} .section-title::before{top:5px;bottom:5px;}}

  /* ===== Feature matrix ===== */
  .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .feature-card{
    display:flex;flex-direction:column;gap:14px;height:100%;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;
    transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  }
  .feature-card:hover{transform:translateY(-3px);border-color:rgba(201,247,58,.45);box-shadow:0 16px 40px rgba(0,0,0,.5);}
  .feature-icon{
    width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:var(--surface-2);border:1px solid var(--line);color:var(--electric);
  }
  .feature-card h3{font-size:18px;font-weight:600;line-height:1.4;}
  .feature-card p{font-size:14.5px;line-height:1.75;color:var(--text-2);}
  @media (max-width:1023px){.feature-grid{grid-template-columns:repeat(2,1fr);}}
  @media (max-width:639px){.feature-grid{grid-template-columns:1fr;}}

  /* ===== Table ===== */
  .table-wrap{
    border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
    overflow-x:auto;box-shadow:0 10px 30px rgba(0,0,0,.35);
  }
  .data-table{width:100%;min-width:820px;border-collapse:collapse;}
  .data-table th{
    background:var(--surface-2);text-align:left;font-size:13px;font-weight:600;color:var(--text-2);
    padding:14px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
  }
  .data-table td{
    padding:16px;border-bottom:1px solid var(--line);
    font-size:14.5px;line-height:1.7;color:var(--text-2);vertical-align:top;
  }
  .data-table tbody tr:last-child td{border-bottom:0;}
  .data-table tbody tr:hover td{background:rgba(255,255,255,.03);}
  .data-table td .cell-title{display:block;color:var(--text-1);font-weight:600;margin-bottom:2px;}
  .data-table .tick{color:var(--brand);font-weight:700;}
  .table-note{margin-top:16px;font-size:13px;color:var(--text-3);}

  /* ===== Timeline ===== */
  .timeline{
    list-style:none;margin:0;padding:0;
    display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  }
  .timeline li{position:relative;padding-top:34px;}
  .timeline li::before{
    content:"";position:absolute;top:9px;left:16px;right:-24px;height:1px;background:var(--line);
  }
  .timeline li:last-child::before{display:none;}
  .node-dot{
    position:absolute;top:4px;left:0;width:12px;height:12px;border-radius:999px;
    background:var(--brand);box-shadow:0 0 0 4px rgba(201,247,58,.12);
  }
  .node-num{display:block;font-size:28px;font-weight:800;color:var(--accent);line-height:1.2;}
  .timeline h3{font-size:18px;font-weight:600;margin:6px 0 8px;}
  .timeline p{font-size:14.5px;color:var(--text-2);}
  @media (max-width:767px){
    .timeline{grid-template-columns:1fr;gap:28px;}
    .timeline li{padding-top:0;padding-left:30px;}
    .timeline li::before{top:18px;left:5px;right:auto;width:1px;height:calc(100% + 12px);background:var(--line);}
    .timeline li:last-child::before{display:none;}
    .node-dot{top:6px;left:0;}
  }

  /* ===== Check list block ===== */
  .check-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
  .check-text p{color:var(--text-2);font-size:16px;margin-top:14px;}
  .check-text .btn{margin-top:24px;}
  .check-list li{
    display:flex;gap:16px;align-items:flex-start;
    padding:20px 0;border-bottom:1px dashed var(--line);
  }
  .check-list li:first-child{padding-top:0;}
  .check-list li:last-child{border-bottom:0;}
  .check-num{font-size:20px;font-weight:800;color:var(--accent);line-height:1.5;flex:0 0 auto;min-width:28px;}
  .check-list h3{font-size:17px;font-weight:600;margin-bottom:4px;}
  .check-list p{font-size:14.5px;color:var(--text-2);}
  @media (max-width:1023px){.check-grid{grid-template-columns:1fr;gap:28px;}}

  /* ===== FAQ ===== */
  .faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
  .faq-item{border-top:1px solid var(--line);}
  .faq-item:last-child{border-bottom:1px solid var(--line);}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:64px;padding:16px 0;font-size:17px;font-weight:600;
    cursor:pointer;list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";color:var(--brand);font-size:22px;font-weight:400;line-height:1;flex:0 0 auto;
    transition:transform var(--ease);
  }
  .faq-item[open] summary::after{content:"−";}
  .faq-item summary:hover{color:var(--brand);}
  .faq-body{padding:0 0 20px;max-width:64ch;color:var(--text-2);font-size:15px;line-height:1.8;}
  @media (max-width:1023px){.faq-grid{grid-template-columns:1fr;gap:24px;}}

  /* ===== CTA ===== */
  .cta-band{
    position:relative;overflow:hidden;
    background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:56px 0;
  }
  .cta-band::after{
    content:"";position:absolute;top:-70px;right:-70px;width:240px;height:240px;
    background:rgba(201,247,58,.05);transform:rotate(45deg);pointer-events:none;
  }
  .cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
  .cta-inner h2{font-size:28px;font-weight:700;line-height:1.3;}
  .cta-inner p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:46ch;}
  .cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
  .cta-note{position:relative;z-index:2;margin-top:18px;font-size:12px;color:var(--text-3);}
  @media (max-width:767px){
    .cta-band{padding:48px 0;}
    .cta-inner h2{font-size:22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
  }

  /* ===== Footer ===== */
  .site-footer{position:relative;background:var(--bg-800);}
  .footer-gradient{height:4px;background:linear-gradient(90deg,var(--brand),var(--accent));}
  .footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;
    padding-top:56px;padding-bottom:40px;
  }
  .footer-brand .logo-name{font-size:18px;font-weight:800;}
  .footer-desc{margin-top:12px;font-size:14px;color:var(--text-2);max-width:30ch;}
  .footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
  .footer-tags li{
    padding:4px 10px;border:1px solid var(--line);border-radius:999px;
    font-size:12px;color:var(--text-3);
  }
  .footer-col h3{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:16px;}
  .footer-col ul li{margin-bottom:10px;font-size:14px;color:var(--text-2);}
  .footer-col a:hover{color:var(--brand);}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    border-top:1px solid var(--line);padding-top:20px;padding-bottom:24px;
    font-size:13px;color:var(--text-3);
  }
  .footer-bottom a:hover{color:var(--brand);}
  @media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;}}
  @media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:28px;padding-top:40px;}}

  /* ===== Back to top ===== */
  .back-top{
    position:fixed;right:20px;bottom:20px;z-index:70;
    width:56px;height:56px;border-radius:999px;background:var(--brand);color:#0C0F0D;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 8px 24px rgba(201,247,58,.24);
    opacity:0;visibility:hidden;transform:translateY(8px);
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  }
  .back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
  .back-top:hover{background:var(--brand-deep);}
  @media (max-width:639px){.back-top{right:14px;bottom:14px;width:48px;height:48px;}}

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  }